Remove batteries from equipment while it is being powered by household alternating current (except for hardwired smoke alarms that use backup alkaline batteries). Never dispose of large numbers of batteries at one time. Where there are collection programs for used batteries in your area, store used batteries in a non-metal container in a well-ventilated area, do not mix the batteries with other items, and bring them to the collection facility on a regular basis. Don't disassemble batteries in any situation. The electrolyte inside will damage your skin. If curious, let's take a look at the structures of Voniko batteries.